Multiple choice K2(UO2)2(VO4)2.3H2O is the chemical formula of which of the following? Carnallite Carnotite Carobbiite Cancrinite Calcite Reveal answer Fill a bubble to check yourself B Correct answer Explanation Carnotite is a potassium uranium vanadate radioactive mineral with the chemical formula K2(UO2)2(VO4)2.3H2O.